Revere, Massachusetts – Indie developer James Hollender’s iOS universal app for iPad, iPhone and iPod touch, Vitamin K, is being upgraded to provide information to users about the harmful, and potentially life-threating, side effects to Coumadin users who ingest any form of grapefruit. A user of the app notified the developer about an incident he experienced some time ago. Research resulted in the following finding: “Grapefruit, whether in whole fruit or in juice form, contains chemicals that can interfere with the enzymes that break down Coumadin in the body. This could cause the drug to build up in the bloodstream, leading to an unintentional overdose of the medication.” This is important to know since grapefruit is rated very low in Vitamin K. The revised app with the warning has been submitted to Apple and should be available shortly.

The Vitamin K 3.5 app allows users to easily find out how much vitamin K there is in over 900 different foods which is critical in helping keep the effectiveness of their blood thinning medications working properly. The foods are rated from Extremely Low to Extremely High in Vitamin K.

New to all 9 iNutrient apps (iKals, iCarbs, iCholesterol, iFiber, iProteins, iSatFat, iSodium, iSugars and Vitamin K), besides making full use of the iPhone 5 taller screen size, is the capability to record Custom Serving Sizes from 1 to 500 grams in 0.1 gram increments. Users can easily adjust the amounts while viewing the weight in not only grams, but also kilograms, ounces and pounds. In addition to immediate weight updates as you change the number of grams, the nutrient content and calories get updated also. This makes it easy to record the exact serving size you’re looking for based on any of the variables: 9 for Vitamin K, 6 for iCals, and 7 for each of the others.

If you take blood thinning medications like Coumadin(R) or Warfarin (also known as Jantoven, Marfarin, Lawarin, Waran and Marevan), then this is an app you will truly make use of on a regular basis. Most lists providing information on the content of vitamin K (K1, K1D & K2) in foods generally contain only a limited number of foods, and often they don’t indicate the serving size. It is important to understand that the goal isn’t to not eat any foods with vitamin K, but rather to keep relatively constant the amount of vitamin K ingested each day so the amount of Coumadin(R) prescribed can work effectively. This can be different for every person using blood thinning medications, and this is why doctors require occasional blood tests as they indicate if the dosage needs to be adjusted.

All too often we hear that you should stay away from dark green leafy vegetables if you are using Coumadin, but there are a host of other foods containing vitamin K. Even the dark green leafy vegetables contain varying amounts of vitamin K. Further, each food has its own characteristics and sometimes whether it is fresh, frozen or canned can make a difference in the vitamin K content. The important thing to understand is you may be inadvertently ingesting something which you think doesn’t contain any vitamin K when in fact it does. A good example would be carrots which contain varying amounts of vitamin K. A single baby carrot has only 0.9 mcg (very low) while a cup of canned carrot juice contains 36.6 mcg (high).

The Vitamin K app provides information about foods and how they are rated for Vitamin K content based on preparation and serving sizes. This is provided as a means to assist in deciding which foods to eat if you are using blood thinning medications such as Coumadin or Warfarin. The foods are rated from Extremely Low to Extremely High in Vitamin K. The following colors help readily identify which is which:

Information is derived from the USDA National Nutrient Database for Standard Reference: Vitamin K Content of Selected Foods per Common Measure. There are currently over 930 different foods included, searchable using approximately 2,500 names (some foods are known by different names or how they are prepared, e.g., “Egg, Scrambled” and “Scrambled Egg”). A few of these have as many as six searchable names.

The Info page provides additional information about Vitamin K:

* What is Vitamin K? – Describes what vitamin K is and how it affects the clotting of blood; Identifies the differences between vitamins K1, K2 and K3

* Coumadin(R) and Vitamin K – Provides information concerning the interaction between Coumadin(R) and vitamin K; Explains why Coumadin(R) might have been prescribed, how it works and what can help keep your blood INR/PT in the desired range; Illustrates potential interactions of alcoholic beverages, dietary supplements, vitamin E, herbal medications and antibiotics

* How to Use this App – Shows detailed information about how to record the user’s personal nutrient intake of Vitamin K, how to make changes to what the user has recorded, how to backup and restore the data, and also a list of the foods that include Vitamins K1D and/or K2.

* Access My Records – Provides up to a full year of recorded entries, listed and grouped by date. Users may also view each individual entry in the database.

* Other Important Information – Provides access to a copy of the User Agreement, and links to communicate with the developer about bugs, suggestions or comments.

Based in Revere, Massachusetts, Indie developer James Hollender is a well seasoned Information Technology professional who has been familiar with Apple products since the days of the first Macintosh computer and has been involved with object oriented programming since the introduction of Java, culminating most recently in writing apps in Objective C for the iPhone, iPod touch and iPad. His innovative ideas have resulted in numerous suggestions and other awards including a commendation from The President of the United States. James Hollender has been involved writing iPad apps with Foliage, Kronos, Olympus and Cross Country Automotive Services (now Agero). Copyright (C) 2010-2013 James Hollender. All Rights Reserved. Apple, the Apple logo, iPhone, and iPod are registered trademarks of Apple Inc. in the U.S. and/or other countries. Other trademarks and registered trademarks may be the property of their respective owners.

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